lib/unitwise/unit.rb in unitwise-0.5.1 vs lib/unitwise/unit.rb in unitwise-0.6.0

@@ -33,23 +33,28 @@
 
     def special?
       terms.count == 1 && terms.all?(&:special?)
     end
 
-    def functional(x = scalar, forward = true)
-      terms.first.functional(x, forward)
-    end
 
     def depth
       terms.map(&:depth).max + 1
     end
 
     def root_terms
       terms.flat_map(&:root_terms)
     end
 
-    def scalar
-      terms.map(&:scalar).reduce(&:*)
+    def scalar(x = 1)
+      terms.reduce(1) do |prod, term|
+        prod * term.scalar(x)
+      end
+    end
+
+    def inverse_scalar(x = 1)
+      terms.reduce(1) do |prod, term|
+        prod * term.inverse_scalar(x)
+      end
     end
 
     def *(other)
       if other.respond_to?(:terms)
         self.class.new(terms + other.terms)